Global Patent Index - EP 2177596 A1

EP 2177596 A1 20100421 - Method of operating a hybrid engine

Title (en)

Method of operating a hybrid engine

Title (de)

Verfahren zum Betrieb eines Hybridmotors

Title (fr)

Procédé de l'opération d'un moteur hybride

Publication

EP 2177596 A1 20100421 (EN)

Application

EP 08253392 A 20081020

Priority

EP 08253392 A 20081020

Abstract (en)

The invention relates to a method of operating a hybrid internal combustion engine, which method comprises: fuelling said hybrid internal combustion engine with a combustible fuel; lubricating said engine with an engine oil composition; and maintaining an oil film thickness of the engine oil composition in the big end conrod bearing shells of the engine of at least 0.4µm; in which the engine oil composition has: a high temperature, high shear viscosity of less than 2.6 cP (2.6 millipascal second) at 150 °C and at a shear rate of 10 6 s -1 ; a Noack volatility of at most 13 weight %; and comprises: (A) a base oil which is at least one synthetic basestock, the base oil having a kinematic viscosity of at least 2.0 cSt (2.0 mm 2 /s) at 100 °C; and (B) an additive package which comprises at least one dispersant, at least one detergent, and at least one phosphorus-containing, anti-wear additive in an amount to provide a total concentration of phosphorus-containing, anti-wear additives in the engine oil composition corresponding to 0.01 to 0.2 weight % phosphorus in the engine oil composition.

IPC 8 full level

C10M 163/00 (2006.01); C10M 169/04 (2006.01); C10N 30/02 (2006.01); C10N 30/06 (2006.01); C10N 30/08 (2006.01)

CPC (source: EP US)

C10M 169/04 (2013.01 - EP US); C10M 2203/1006 (2013.01 - EP US); C10M 2205/0285 (2013.01 - EP US); C10M 2205/173 (2013.01 - EP US); C10M 2207/2805 (2013.01 - EP US); C10M 2215/28 (2013.01 - EP US); C10N 2020/02 (2013.01 - EP US); C10N 2030/02 (2013.01 - EP US); C10N 2030/54 (2020.05 - EP US); C10N 2030/56 (2020.05 - EP US); C10N 2030/74 (2020.05 - EP US); C10N 2040/25 (2013.01 - EP US); C10N 2040/253 (2020.05 - EP US); C10N 2040/255 (2020.05 - EP US)

Citation (applicant)

  • EP 1600495 A1 20051130 - TONENGENERAL SEKIYU KABUSHIKI [JP]
  • TAMOTO ET AL., POSSIBILITIES OF ULTRA LOW VISCOSITY FUEL SAVING GASOLINE ENGINE OIL, June 2004 (2004-06-01)

Citation (search report)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

Designated extension state (EPC)

AL BA MK RS

DOCDB simple family (publication)

EP 2177596 A1 20100421; JP 2012511057 A 20120517; US 2012012076 A1 20120119; WO 2010046620 A1 20100429

DOCDB simple family (application)

EP 08253392 A 20081020; GB 2009002435 W 20091012; JP 2011531550 A 20091012; US 99842809 A 20091012